Open AccessDesign of a CMOS Distributed Power Amplifier with Gradual Changed Gain Cells
Author(s) -
Zhang Ying,
Li Zeyou,
Yang Hua,
Geng Xiao,
Zhang Yi
Publication year - 2018
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2018.09.012
Subject(s) - amplifier , cmos , power (physics) , electrical engineering , optoelectronics , materials science , computer science , physics , engineering , quantum mechanics
A non‐uniform Distributed power amplifier (DPA) is designed and implemented in a 0.18 μm CMOS technology. The gradual changed gain cells work with the tapered on‐chip inductors to construct non‐uniform artificial transmission lines, which improves the output power and efficiency in a wide frequency band while maintaining good input and output impedance matching. The proposed DPA achieves 9dB average associated gain from 1 to 17.2GHz, and the input return loss is less than ‐9dB while the output return loss is less than ‐8.5dB in the desired frequency band. The output power at 1dB Output compression point ( OP 1dB ) is more than 7.8dBm in the frequency band of 2‐16GHz, and the peak power‐added efficiency is 6.2% with the OP 1dB 12.6dBm at 4GHz.